<template>
	<div class="tikuBg">
		
		<div class="banner">
			<image src="https://www.baixuemianshi.com/zhuanti/images/swiper_xcx2.jpg" mode="widthFix"></image>
		</div>
		<u-sticky bgColor="#fff">
			<u-tabs :list="lxList"  :current="yjCurrent" @change="changeTabs"></u-tabs>
			<div class="searchBox">
				<u-search placeholder="输入关键字搜索" shape="round" v-model="searchVal"></u-search>
			</div>
		</u-sticky>
		<div class="allBox">
			<div class="item" v-for="(item,index) in searchList" :key="index">
				<h3>
					
					<u-parse :content="(searchList.length - index) + '、' + item.leixing + '-' + item.title"></u-parse>
				</h3>
				<div class="d_btns">
					<div class="btn" v-if="item.hasZzg">
						<u-button type="error" size="mini" text="查看逐字稿" @click="showAnswer(item)"></u-button>
					</div>
					<div class="time">{{item.time}}</div>
				</div>
				
			</div>
		</div>
		<div class="loadBox" v-if="searchLoading">
			<u-loading-icon size="36" mode="circle" :vertical="true" color="red" text="加载中..." textSize="20"></u-loading-icon>
		</div>
		<canvas canvas-id="waterMark" class="waterMark" style="width: 100vw; height: 100vh;"></canvas>
		<image :src="waterMarkUrl" class="waterMark-bg" style="width: 100vw; height: 100vh;"></image>
	</div>
</template>

<script>
	import {
		mapActions
	} from 'vuex';
	const db = wx.cloud.database()
	export default {
		data() {
			return {
				
				allSelect:[],
				lists:[],
				showDetail: false,
				yjCurrent: 1,
				leixings: [],
				lxList: [],
				searchLoading:true,
				pages:0,
				filterLxName:"",
				searchVal:"",
				banjiDetail:[],
				
				waterMarkUrl: "",
				windowWidth: 100,
				windowHeight: 100,
			}
		},
		onShareAppMessage(res) {
			if (res.from === 'button') { // 来自页面内分享按钮
				return {
					title: `题库-学员端`, //分享标题
					path: '/pages/nbhd/tiku/student', //分享页面路径
					imageUrl: 'https://www.baixuemianshi.com/zhuanti/tiku/images/xcx_share.jpg', //分享图标
					desc: '雪恒教育-白雪面试', //自定义分享描述 
				}
			} else {
				return {
					title: `题库-学员端`, //分享标题
					path: '/pages/nbhd/tiku/student', //分享页面路径
					imageUrl: 'https://www.baixuemianshi.com/zhuanti/tiku/images/xcx_share.jpg', //分享图标
					desc: '雪恒教育-白雪面试', //自定义分享描述 
				}
			}
		},
		onLoad(options) {
			
		},
		onShow() {
			if(wx.setVisualEffectOnCapture){
			    wx.setVisualEffectOnCapture({
			        visualEffect: 'hidden',
			        success:(res) => {
			            console.log('success回调',res)
			        },
			    })
			}
		},
		onHide() {
			if(wx.setVisualEffectOnCapture){
			    wx.setVisualEffectOnCapture({
			        visualEffect: 'none',
			        success:(res) => {
			            console.log('success回调',res)
			        },
			    })
			}
		},
		computed: {
			userphone() {
				return this.$store.getters.userphone ? this.$store.getters.userphone : '';
			},
			selectBanji(){
				return this.$store.getters.selectBanji ? this.$store.getters.selectBanji : '';
			},
			allSelectRevers(){
				let arr = [...this.lists]
				return arr.reverse()
			},
			searchList(){
				let that = this
				let l = []
				if(that.searchVal){
					l = that.allSelectRevers.filter(item => item.title.indexOf(that.searchVal) != -1)
				}else{
					l = that.allSelectRevers
				}
				return l
			}
			
		},
		created() {
			let that = this;
		},
		mounted() {
			let that = this 
			that.getTimuInfo(0)
			wx.hideLoading()
			
			if(this.userphone){
				this.drawWaterMark(this.userphone);
			}else{
				this.drawWaterMark('雪恒教育-白雪面试');
			}
		},
		watch: {},
		methods: {
			...mapActions(['LogSetPhone','LogSetBanji']),
			drawWaterMark(text) {
				this.getDeviceInfo().then(response => {
					const w = response.windowWidth;
					const h = response.windowHeight;
					this.windowWidth = w;
					this.windowHeight = h;
					//创建canvas绘制上下文
					const canvas = uni.createCanvasContext("waterMark", this);
					canvas.clearRect(0, 0, w, h)
					//开始创建一个路径，需要调用fill或者stroke才会使用路径进行填充或描边。
					canvas.beginPath();
					canvas.setFontSize(18);
					canvas.setFillStyle('rgba(0, 0, 0, 0.1)');
					canvas.rotate(-30 * Math.PI / 180)
					if (text) {
						text = this.trim(text)
					}
					const maxWidth = text.length * 18
					for (let x = 0; x < 10; x++) {
						for (let y = 0; y < 20; y++) {
							//在画布上绘制被填充的文本。
							canvas.fillText(text, (maxWidth + 40) * x - 400, 90 * y + 20);
						}
					}
					//将之前在绘图上下文中的描述（路径、变形、样式）画到 canvas 中。
					canvas.draw(false, () => {
						//把当前画布指定区域的内容导出生成指定大小的图片
						uni.canvasToTempFilePath({
							canvasId: "waterMark",
							complete: (res) => {
								this.waterMarkUrl = res.tempFilePath
							}
						}, this)
					})
				});
			},
		
			trim(str) {
				let trimStr = '';
				const reg = /[\t\r\f\n\s]*/g;
				if (typeof str === 'string') {
					trimStr = str.replace(reg, '');
				}
				return trimStr
			},
			/**
			 * 获取当前设备的信息
			 * **/
			getDeviceInfo() {
				return new Promise((resolve, reject) => {
					uni.getSystemInfo({
						success: (sysInfo) => {
							resolve(sysInfo)
						}
					})
				})
			},
			getTimuInfo(page){
				let that = this
				wx.cloud.callFunction({
					name: 'get_page_banji',
					data: {
						fncname: 'nbhd_n_tiku_tmList',
						banji: that.selectBanji,
						page: page,
						limit: 100
					},
					complete: res => {
						if(res.result.data.length > 0){
							that.banjiDetail = that.banjiDetail.concat(res.result.data)
							let p = page + 1
							that.getTimuInfo(p)
						}else{
							that.getAllSelect()
						}
						
					}
				})
			},
			getAllSelect(){
				let that = this
				let allArr = []
				that.banjiDetail.map((item,index) => {
					if(item.type=="刷题模式"){
						item.list.map((t,j) => {
							t.zTitle = item.title
							allArr.push(t)
						})
					}else{
						item.list.map((t,j) => {
							t.map(l => {
								l.zTitle = item.title
								allArr.push(l)
							})
						})
					}
				})
				that.allSelect = allArr
				that.filterLx()
			},
			filterLx() {
				let that = this
				let lxs = that.allSelect.map(item => item.leixing)
				// lxs.unshift('全部类型')
				lxs = [...new Set(lxs)]
				let lxNames = []
				lxs.map(item => {
					lxNames.push({
						"name": item
					})
				})
				that.lxList = lxNames
				that.yjCurrent = 0
				that.filterLxName = lxs[0]
				that.filterList()
			},
			filterList(){
				let that = this
				that.lists = that.allSelect.filter(item => item.leixing == that.filterLxName)
				this.searchLoading = false
			},
			changeTabs(e) {
				this.searchVal = ''
				this.yjCurrent = e.index
				this.filterLxName = e.name
				this.searchLoading = true
				this.lists = []
				this.pages = 0
				this.filterList()
			},
			showAnswer(item){
				let that = this
				uni.navigateTo({
					url:"./answer?tmid=" + item._id
				})
			},
			
		},
		components: {
			
		}
	};
</script>

<style scoped>
	@import url(./index.css);
	.allBox{}
	.allBox .item{width: 650rpx; background-color: #fff; border-radius: 15rpx; margin: 20rpx auto 0; padding: 25rpx; box-shadow: 0 0 15rpx rgba(0,0,0,.2);}
	.allBox .item h3{font-size: 34rpx; line-height: 1.8;}
	.allBox .item .time{ text-align: right;}
</style>